Konstantin Belousov e442a285a6 The kernel may do unbalanced calls to fifo_close() for fifo vnode,
without corresponding number of fifo_open(). This causes assertion
failure in fifo_close() due to vp->v_fifoinfo being NULL for kernel
with INVARIANTS, or NULL pointer dereference otherwise. In fact, we may
ignore excess calls to fifo_close() without bad consequences.

Turn KASSERT() into the return, and print warning for now.

Tested by:	pho
Reviewed by:	rwatson
MFC after:	2 weeks
2009-01-26 14:21:00 +00:00
..